电压和电流计算结果得负值,说明它们的参考方向假设反了。
参考答案:对
It took ______ people as well as ______ time to build the pyramid.
A.a large number of; a great many
B.a great many; a large amount of
C.a great many of; large amounts of
D.a large amount of; a great deal of
诉讼参与人